Distance File: Don't accept dropped .xlsx files #6601
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janezd
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| @@ -158,7 +160,12 @@ def parametersFromFile(self, path): | |||
| return {"recent_paths": stored_recent_paths_prepend(self.WIDGET, r)} | |||
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| def canDropFile(self, path: str) -> bool: | |||
| return os.path.splitext(path)[1].lower() in (".dst", ".xlsx") | |||
| try: | |||
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You could keep the old condition (only .dst) for better performance.
| @@ -158,7 +160,12 @@ def parametersFromFile(self, path): | |||
| return {"recent_paths": stored_recent_paths_prepend(self.WIDGET, r)} | |||
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| def canDropFile(self, path: str) -> bool: | |||
| return os.path.splitext(path)[1].lower() in (".dst", ".xlsx") | |||
| try: | |||
| distances = DistMatrix.from_file(path) | |||
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This may take too long for big files.
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What was the file dimension again? Can you tell me which file it was - or send it? I tried 600x1000 and takes a few seconds.
What I discovered was that, unfortunately, most time is spent in opening the Excel file. Hence, the File widget will take more or less the same time as well.
Of course, with this PR, the file is read twice and we must prevent this. I'm considering decorating functions that open excel files with a lru cache of size 1 that would remember the last read excel workbook - of course checking not only the file name but also the timestamp. In this way - and given that opening the file takes majority of time - the time spent in owdistancefile would be saved in owfile because it would reuse the workbook object.
janezd
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Note: taking a file and dragging it around the canvas triggers an incessant, continuous stream of calls to |
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@ales-erjavec, can we assume that Could we avoid incessant calling of |
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canHandleDrop should not do anything computationally expensive. Only check filename, possibly read a limited amount of the file (e.g. magic header byte[s])... |
Issue
When dropping an .xlsx file onto canvas, the user has to choose between Distance File and File, which is confusing (because these are widget names). The user almost always wants to load an .xlsx with File.
Description of changes
Distance File's functionality now no longer accepts .xlsx files.
Includes